This study focuses on the isolation, chemical and crystalline structures, kinetics of heterogeneous deacetylation chitin from mud crab shells ( Scylla serrata). The independent variables in this work are temperature, NaOH concentration, reaction time. degree (DD) resulting chitosan was determined for different times. It found that DD increases nonlinearly with followed pseudo first-order it occ...

The comparative study of mud crab (Scylla olivacea) production between Sundarbans Mangrove Ecosystem and traditional shrimp ghers was conducted in three major landing centers namely Gona, Digraj Vaga Bagerhat region at monthly interval from January to December 2002. maximum 1247.15 MT estimated mangrove swamp areas while 1016.30 ghers. the ecosystem 10.20% higher significant 5% level than There...

polyanionic cellulose polymer is used as an additive in drilling mud in order to decrease water loss and mudcake- thickness. in this study effect of bulk and nanosize polyanionic cellulose on water loss and mud-cakethickness in mud drilling is investigated. polyanionic cellulose nanoparticles are made by using of ball milling. size of nanoparticles is measured by particle size analyzer. polyani...